The invention discloses a low-temperature deoiling scouring agent. The low-temperature deoiling scouring agent comprises, by weight friction, 10-20% of fatty alcohol-polyoxyethylene ether (EO9), 10-20% of fatty amine alcohol-polyoxyethylene ether (EO15), 5-10% of Isomeric ten alcohol-polyoxyethylene ether (EO5), 5-15% of secondary alcohol-polyoxyethylene ether (EO9), 3-6% of solubilizer, and the allowance is deionized water. The invention further discloses a preparation method for the low-temperature deoiling scouring agent. The low-temperature deoiling scouring agent is applied to the pretreatment processes of refining, deoiling, detergent washing and the like, the deoiling problem of fabric (especially the fabric containing spandex) in the process of pretreatment is solved, and oil stain and impurities in the fabric are guaranteed to be removed effectively. The functions of dispersing, emulsifying and wetting are achieved, the permeability is good, the form is little, and detergency is strong.